Effect Of Neutron Irradiation On Laser Diode Properties

Barnes, C. E.; Heflinger, D.; Reel, R.

doi:10.1117/12.963249

Cited by 6 publications

(3 citation statements)

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“…Degradation of integrated components inside a fully packaged laser transmitter, such as lenses, can cause significant attenuation of the output power[l2]. The emission spectrum of semiconductor lasers is found to be unaffected by radiation damage [9]. Little data is available on the recovery of the damage in lasers.…”

Section: Radiation Damage Effectsmentioning

confidence: 99%

Radiation damage studies of optoelectronic components for the CMS tracker optical links

Gill

Arbet-Engels²,

Batten³

et al.

RADECS 97. Fourth European Conference on Radiation and Its Effects on Components and Systems (Cat. No.97TH8294)

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Optical links are being developed to transfer analogue tracking data and digital timing and control signals in the future Compact Muon Solenoid (CMS) experiment at CERN. The radiation environment inside the CMS tracker will be extreme, with hadron fluences up to -10i4/cm2 and ionising doses of -100kGy over the experimental lifetime. Prototype link elements, consisting of commercially available 13 lOnm multi-quantum-well InGaAsP lasers and InGaAs p-i-n photodiodes, have been irradiated in a fully packaged form with -6MeV neutrons to 10'5n/~m2, 24GeV protons to 4x10i4p/cm2 and '"Co-gammas to 100kGy. Three types of single-mode optical fiber, two pure-silica core and one Gedoped core, were irradiated in several stages with 6oCo-gammas to a total dose of -90kGy.Neutron and proton damage induced large increases in laser threshold and significant decreases in light output efficiency. P-i-n leakage current increased by up to 6-7 orders of magnitude for neutron and proton damage. P-i-n response was relatively unaffected until -2x 10'4n/cm2, or -4~1 0~~p / c m~, after which the photocurrent decreased rapidly. Gamma damage after lOOkGy was minor in comparison to hadron damage in both the lasers and p-i-n photodiodes. The radiation induced attenuation at 1300nm in the optical fibers was dependent upon the fiber type, with losses of O.OBdB/m for the pure-silica core fiber and 0.12dBIm in the Ge-doped core fiber, after -90kGy. The annealing in one of the pure-silica core fibers was found to be temporary in nature.

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Section: Radiation Damage Effectsmentioning

confidence: 99%

Radiation damage studies of optoelectronic components for the CMS tracker optical links

Gill

Arbet-Engels²,

Batten³

et al.

RADECS 97. Fourth European Conference on Radiation and Its Effects on Components and Systems (Cat. No.97TH8294)

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“…The number of radiative recombination centres becomes smaller and the LEDs and LDs emit with less intensity. LDs show an increase of the threshold current [4]. LEDs and LDs used today in the telecommunication industry have short minority carrier lifetimes as well as high current densities.…”

Section: Introductionmentioning

confidence: 99%

Radiation effects in light emitting diodes, laser diodes, photodiodes, and optocouplers

Lischka

Henschel

Köhn

et al. 1993

RADECS 93. Second European Conference on Radiation and Its Effects on Components and Systems (Cat. No.93TH0616-3)

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A variety of commercially available LEDs, LDs, PDs, and optocouplers from two German manufacturers were irradiated at a flash X-ray source, a 6oCo gamma ray source, and a 14 MeV neutron generator. Light output and emission spectrum of the LEDs and LDs were measured before and after irradiation at the 6oCo source. With the PDs we measured the dark current and the photo current before and after 6oCo irradiation. Determination of the sensitivity against neutrons was made off-line. With PDs we measured the photo current induced by pulsed X-rays. The GaAs LED showed a maximum decrease of output power of 28 dB after a total gamma dose of lo6 Gy and LDs a threshold current shift of 80% after neutron fluences of 4 * 1014 cm-2 (1 MeV).

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“…In lasers, recombination at these defects competes with band-to-band radiative transitions, resulting in higher threshold currents. [7][8][9] The slope-efficiency above threshold (dP/dI, where P is the output light power at current I) is less affected by displacement damage as the stimulated recombination lifetime is much shorter than the lifetime associated with recombination at defects. However the damage to the laser slope-efficiency becomes significant after high hadron fluences (>10 14 /cm 2 ) and has been linked directly to the threshold current damage.…”

Section: Introductionmentioning

confidence: 99%

Radiation damage studies of optical link components for applications in future high-energy physics experiments

et al. 1998

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Optical data links are being developed at CERN for use in the tracking system of the Compact Muon Solenoid (CMS) experiment to be operated at the future CERN Large Hadron Collider. The radiation environment will be severe in the CMS tracker; simulations predict hadronic fluences >10 14 /cm 2 over an experimental lifetime of ten years, consisting of a mixture of neutrons, pions and protons over a wide energy spectrum, plus an ionizing dose of ~100kGy. Candidate optical link components must therefore be qualified for sufficient radiation hardness. Results are presented for commercially available InGaAsP lasers and InGaAs p-i-n photodiodes irradiated with 330MeV pions up to 5.4x10 14 π/cm 2 . The evolution of the laser threshold and efficiency with fluence is presented, in addition to the leakage current and photocurrent in the photodiodes. Comparisons are drawn with previous irradiation tests on identical devices using 6MeV neutrons and 24GeV protons, and ionizing damage due to 60 Co gamma rays.

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Effect Of Neutron Irradiation On Laser Diode Properties

Cited by 6 publications

References 0 publications

Radiation damage studies of optoelectronic components for the CMS tracker optical links

Radiation damage studies of optoelectronic components for the CMS tracker optical links

Radiation effects in light emitting diodes, laser diodes, photodiodes, and optocouplers

Radiation damage studies of optical link components for applications in future high-energy physics experiments

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